Hi! I'm planning my first tour to Machu Picchu; I'm anticipating a range of ages from 30s-60s+. From Lima, I am planning to fly to Cusco and immediately head to Ollantaytambo. Is Ollantaytambo really any better for adjusting to the high altitude than Cusco? (I know Ollanta is about 9,100 ft, whereas Cusco is at over 11,100 ft., but how much difference does 2,000 ft make?) When we're done with the Sacred Valley and Machu Picchu, we'll spend a couple days in Cusco before flying home. After having been at Machu Picchu and Ollanta for 4+ days will I need a "down" day in Cusco to re-adjust to the newer higher altitude? Or will have being acclimated to Ollanta make our adjustment to Cusco's higher altitude easier to handle? I realize everyone will react differently to the altitude in both locations, but I want to allot a reasonable amount of time in the schedule for everyone to adjust. Just wondering where it's going to hit us hardest: when we first arrive (and stay in Ollantaytambo), when we're in Cusco (at the highest altitude), or both.